Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas rodadas o evento rings: king of kings 2000 block a teve com um registro de 6-1?
 ###Tabelas: CREATE TABLE 1914 (1914_id AUTO_INCREMENT PRIMARY KEY, meas. num INT, passed VARCHAR, YES votes INT, NO votes INT, % YES VARCHAR, Const. Amd.? VARCHAR, type VARCHAR, description VARCHAR) CREATE TABLE huskers_in_the (huskers_in_the_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Position VARCHAR, Round INT, Overall INT, MLB Team VARCHAR) CREATE TABLE women's_doubles:_14_6_titles_8_runner-ups (women's_doubles:_14_6_titles_8_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE mixed_martial_arts_record (mixed_martial_arts_record_id AUTO_INCREMENT PRIMARY KEY, Res. VARCHAR, Record VARCHAR, Opponent VARCHAR, Method VARCHAR, Event VARCHAR, Round INT, Time VARCHAR, Location VARCHAR) CREATE TABLE ppl_2004__final_standings (ppl_2004__final_standings_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Played INT, Drawn INT, Lost INT, Points INT)  
SELECT Round FROM mixed_martial_arts_record WHERE Event = rings: king of kings 2000 block a AND Record = 6-1